2a thread class right-hand 0.782" thread length fillister head style 0.046" hole diameter 32 thread quantity per inch cadmium screw surface treated unc thread series
3a thread class right-hand 0.625" thread length dee chamfer head style 24 thread quantity per inch radius of head to shank joint must be 0.010 in. min to 0.015 in. max unf thread series
